Charles Sobol was a human alien immunologist. Together with his wife Marie Sobol he experimented with alien antibodies. They experimented on themselves and on their child, a boy. This granted them an alien immune system. Their blood plasma built alien antibodies and they had an immune response to alien diseases. Their work on alien immunology was radical, but they had achieved a lot. Charles and Marie disappeared soon afterwards. According to Alistair Gryffen, Marie and Charles Sobol were the parents of Starkey, who had an alien immune system. (TV: Oroborus)